G rated knock-knock jokes (suggest some suitable for 5-6 yr olds)

When ds was 2, he’d been listening to dd 4 tell knock-knock jokes for a solid month. Bolted in his car seat, he started:

ds-knock knock
me-who’s there?
ds-da
me-da who?
ds-DADDY!!! (squealing with glee)

I was so surprised he got it I almost drove off the road. He hasn’t gotten one right in the past year.

When they demand I start the KK jokes, I just run the litany of the states…

KK
WT?
Miss
Miss Who?
Mississippi

etc., etc., etc.